package com.itheima.reggie.common;
/*

全局异常处理

* */

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import java.sql.SQLIntegrityConstraintViolationException;

@ControllerAdvice(annotations = {RestController.class, Controller.class}) // 指定拦截那些类型的控制器
@ResponseBody // 将方法的返回值 R 对象转换为json格式的数据, 响应给页面;
// 上面两个注解可以合并成一个注解  @RestControllerAdvice
@Slf4j
public class GlobalExceptionHandler {

    @ExceptionHandler(SQLIntegrityConstraintViolationException.class)
    public  R<String> exceptionHandler(SQLIntegrityConstraintViolationException ex){
        log.info(ex.getMessage());

        if (ex.getMessage().contains("Duplicate entry")){
            String[] split = ex.getMessage().split(" ");
            String msg = split[2] + "已存在";
            return R.error(msg);
        }

        return R.error("未知错误");
    }


    @ExceptionHandler(CustomException.class)
    public R<String> exceptionHandler(CustomException ex){
        log.error(ex.getMessage());
        return R.error(ex.getMessage());
    }

}
